ASTROSAT CZTI

Data Quality Report

Orbit 02821

Creation date: 2024-06-27T14:22:04.443048
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_999T99_9000000410_02821cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02821cztM0_level2_quad_clean.evt
Size (bytes)1,710,221,76066,893,760
Size1.6 GB 63.8 MB
Events in quadrant A9,146,380470,523
Events in quadrant B11,451,067472,915
Events in quadrant C13,177,043389,739
Events in quadrant D17,631,694273,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313682
B0382091
C0436331
D0573841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59641342.246814%
B59643636.086519%
C5964204434.272300%
D5964493682.763246%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7209 5965 915 915 12.69% 15.34%
B 7209 5965 2187 2187 30.34% 36.66%
C 7209 5965 3009 3009 41.74% 50.44%
D 7209 5965 5719 5719 79.33% 95.88%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 31 450148 922.33 2104 2086 485.8
A 0 50 332548 680.25 2104 2086 485.8
A 0 117 123258 249.43 2104 2086 485.8
B 1 158 1146199 2259.35 2177 2155 506.4
B 3 10 833741 1642.29 2177 2155 506.4
B 3 11 262534 514.22 2177 2155 506.4
C 0 219 3695519 7290.84 1742 1797 506.6
C 1 16 1312592 2587.31 1742 1797 506.6
C 1 192 713989 1405.76 1742 1797 506.6
D 0 226 7024727 18225.53 1284 1304 385.4
D 1 7 4247353 11018.35 1284 1304 385.4
D 1 31 329111 850.65 1284 1304 385.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
Veto Counter